AS marketing schemes go, the hip-hop music star Nelly risks sending a lot of mixed signals with the name of the new energy drink he's marketing. It's called "Pimp Juice." I could be wrong, but "Pimp Juice" does not sound to me like something that you want to put in your mouth. Either way, you won't get a chance to find out, if certain leaders of black community organizations have their way. In Los Angeles, three organizations called Project Islamic HOPE, the National Alliance for Positive Action, and the National Black Anti-Defamation League staged a press conference last Tuesday (Sept....